Help!!! Urgent!! Colour change of those natural substances as a base/acid indicator (1 Viewer)

[x-ray1018]

The colour change of those natural substances as a base/acid indicator
1.) Tea pigment
2.) Grape
3.) Turmeric Indicator
4.) Rhubarb
5.) Hibiscus flower
6.) Cranberry juice

very urgent, thx alot!!!

 

[Nakashima]

Re: Help!!! Urgent!! Colour change of those natural substances as a base/acid indicat

Don't you do these experiments at school?

I can't remember them now, besides we only did cabbage, hibiscus and cranberry.

Cabbage was red in acid and blue in base, I think. I remember cranberry was reddish in everything so like, avoid it if you can. Hibiscus was yellowish, although I can't remember in what.

Sorry.

 

[tennille]

Re: Help!!! Urgent!! Colour change of those natural substances as a base/acid indicat

A pink hibiscus will go yellow in a basic solution, but remain pink in acidic solution. Tea is meant to go darker in basic solution, and lighter in acidic. Acidic solutions turn tumeric indicator yellow, but I'm unsure of basic solutions.